Lamberti J J
J Thorac Cardiovasc Surg. 1976 Jul;72(1):86-8.
The porcine heterograft has been shown to be a very satisfactory replacement for the diseased aortic valve. In certain cases, the advantage of a low thromboembolism rate without anticoagulation must be weighed against the suboptimal orifice size noted in the smallest heterografts. In using the largest replacement possible, the surgeon may encounter difficulty with closure of the aortotomy. Patch aortoplasty, as used in the 4 cases reported here, allows implantation of a larger heterograft. The technique is simple and adds little time to the operation. In selected cases, enlargement of the aortic root should result in better long-term hemodynamic performance.
猪异种移植物已被证明是病变主动脉瓣非常理想的替代物。在某些情况下，必须权衡低血栓栓塞率且无需抗凝这一优势与最小异种移植物中存在的孔口尺寸欠佳这一情况。在尽可能使用最大尺寸的替代物时，外科医生可能会在主动脉切口闭合方面遇到困难。如本文报道的4例病例中所采用的补片主动脉成形术，可允许植入更大的异种移植物。该技术简单，且几乎不增加手术时间。在选定的病例中，主动脉根部扩大应会带来更好的长期血流动力学表现。
